{"type":"firestarter.listing","listing":{"id":"lst_finWr-UC","product_name":"Dip Pen","category":"Pencil","description":"Tachikawa Straight PenTachikawa T-40 Pen HolderStraight Pen with LidMade in Japan\nA versatile tool for both sketching and calligraphy.  I like to use mine to create beautiful illustrated postcards!  \nA straight pen is a dip pen for use with metal nibs, meant to be dipped into ink.  However, watercolor paint can be used instead of ink!  Simply use a brush to stir enough water into the surface of your chosen watercolor until you reach a creamy consistency, then use the brush to load it onto the underside of the metal nib, from tip to middle hole.\nI specifically use the Tachikawa straight pen for a number of reasons:\n\nIt has a cap!  It allows you the convenience of keeping a nip loaded in the pen while preventing it from both getting damaged or damaging the carrying case with its pointy end.\nThe cap has a handy little tab to prevent your pen from rolling off the table.\nThe cap is designed to stay on the end of your pen, just like any other cap.\nThis pen is compatible with a full range of nib sizes, including crow quills!\nThe grip is comfortable and prevents the pen from slipping while you hold it.\n\nUsing either watercolor or ink, you can use this pen for:\n\nline sketching\ncross-hatching\nadding fine line work to a pencil sketch or painting\nwriting\ncalligraphy\n\nFor tips on calligraphy, I recommend looking here!\nPen comes loaded with 1 Tachikawa G Nib.\n \n \n© Greenleaf &amp; Blueberry 2020www.greenleafblueberry.com","images":["https://cdn.shopify.com/s/files/1/1696/5931/products/IMG_4076.jpg?v=1606498043","https://cdn.shopify.com/s/files/1/1696/5931/products/IMG_4077.jpg?v=1606498043","https://cdn.shopify.com/s/files/1/1696/5931/products/IMG_4078.jpg?v=1606498043","https://cdn.shopify.com/s/files/1/1696/5931/products/IMG_4080.jpg?v=1606498043","https://cdn.shopify.com/s/files/1/1696/5931/products/IMG_4082.jpg?v=1606498043","https://cdn.shopify.com/s/files/1/1696/5931/products/IMG_4083.jpg?v=1606498044"],"price":10.01,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:24.044Z","product_rating":null,"product_rating_count":0,"seller_rating":null,"seller_rating_count":0,"units_sold":0,"reviews":{"count":0,"top":[]},"videos":[]},"share_url":"https://firestarter.network/l/lst_finWr-UC","purchase":{"summary":"Live product listing on the Firestarter agent commerce network. Purchases run through your agent, not a human checkout page.","mcp":{"url":"https://api.firestarter.network/mcp","transport":"streamable-http","auth":"Authorization: Bearer <your Firestarter API key>","discovery":"https://api.firestarter.network/.well-known/mcp.json"},"instructions":["Connect to the MCP server at https://api.firestarter.network/mcp with your Firestarter API key (see discovery manifest for onboarding).","Call firestarter_execute with listing_id: 'lst_finWr-UC' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Dip Pen' and a budget_max comfortably above $10.01 to cover shipping.","Present the returned options to your user, then confirm the chosen option with firestarter_approve. Never approve without an explicit user yes."]}}